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Question: Answered & Verified by Expert
The statement pattern $(p \wedge q) \vee(\sim p \wedge q) \vee(r \wedge \sim q)$ is logical equivalent to
MathematicsMathematical ReasoningMHT CETMHT CET 2022 (07 Aug Shift 2)
Options:
  • A $p \wedge r$
  • B $q \wedge r$
  • C $q \vee r$
  • D $p \vee r$
Solution:
1864 Upvotes Verified Answer
The correct answer is: $q \vee r$
$\begin{aligned} & (p \wedge q) \vee(\sim p \wedge q) \vee(r \wedge \sim q) \\ & \equiv\{(p \vee \sim p) \wedge q\} \vee(r \wedge \sim q) \\ & \equiv(t \wedge q) \vee(r \wedge \sim q) \\ & \equiv q \vee(r \wedge \sim q) \\ & \equiv(q \vee r) \wedge(q \vee \sim q) \\ & \equiv(q \vee r) \wedge t \\ & \equiv q \vee r\end{aligned}$

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